The underused caret (shift + 6) is an excellent tool for managing file versions. If you've got several versions of a file to track and no full-blown version control system to use, just append the caret and a version number to the file name. Tech site WorldStart.com explains that this method of versioning makes it easy to locate file revisions by entering the caret as criteria into your search app du jour. How do you manage the various versions of your important documents? Share in the comments.